Anyone knows what's Solaris?

Solaris is an entire operating environment developed and marketed by Sun micro. previously Solaris was only suported on SPARC hardware , since from version 9 they have even ported it on X86 platform. It is considered to be one of the most robust and stable platform available out there.

Solaris is a computer operating system developed by Sun Microsystems. It is certified against the Single Unix Specification as a version of Unix, and although historically a closed-source project, has since been open-sourced by Sun Microsystems. It is now one of the largest open-source projects in the community, and it continues to grow in features, members, and applications.

www.sun.com/software/solaris/ This link will take you to where they will describe it and if available tell you so and how much if there is a cost. I wish you luck with the knowledge and use of this enterprise class software.